Novel morphanthridone oximes



United States Patent 3,350,391 NOVEL MORPHANTHRIDONE OXIMES Alexander E. Drukker, Milwaukee, and Claude I. Judd, equon, Wis., assignors to Colgate-Palmolive Company, New York, N.Y., a corporation of Delaware 0 Drawing. Filed Feb. 8, 1965, Ser. No. 431,212 4 Claims. (Cl. 260-239) ABSTRACT OF THE DISCLOSURE The compounds are 5-acyl-5,6-dihydro-ll-rnorphanthridone oximes, useful as anti-hypertensive agents. A species disclosed is 5 acetyl 5,6 dihydro ll morphanthridone oxime.

This invention relates to novel morphanthridone derivatives and processes of preparing such derivatives. More particularly, this invention is concerned with novel 5,6- dihydro-ll-rnorphanthridoneoximes, processes of producing these compounds and pharmacologic and theraupeutic uses for such compounds.

The novel 5,6 dihydro 11 morphanthridone oximes of this invention have the formula IIVOH V wherein A and A are hydrogen, -a halo group such as the chloro and bromo groups, a lower alkoxy such as methoxy and ethoxy, a lower alkyl such as methyl and butyl, a lower alkyl-thio such as thiomethyl and thioethyl and trifluoromethyl; and R is a lower alkyl such as methyl or butyl, an aryl such as phenyl, and aralkyl such as benzyl, an O-1ower alkyl such as methoxy or an S-lower alkyl such as thiomethyl.

The compounds of Formula 1 may be prepared by re- 5,6 dihydro 11 morphanthridone with hydroxylamme. The novel process of the present invention may be represented as follows:

i l-R i-R N N I HONH2 A A; H A I A1 g NOH The acylation of the yield the S-acyl-S,fi-dihydromorphanthrrdrne can be readwith an acyl halide, anhydride or ester. In practice of the process the 5,6-dihydromorphanthridine is dissolved in a suitable solvent such as benzene, toluene or heated, preferably at reflux 3,356,391 Patented Oct. 31, 1967 Examples of some of the acylating agents which may be employed in this reaction are:

Acetyl chloride,

Acetyl bromide, Propionyl chloride, n-Butyryl chloride, Benzoyl chloride,

Acetic anhydride, Propionic anhydride, Ethyl formate,

Benzyl formate,

Ethyl chlorocarbonate, and Butyl chlorothiocarbonate.

Examples of some of the 5-acyl-5,6-dihydromorphanthridnes thus prepared are:

The oxidation of the 5-acyl-5,6-dihydromorphanthridines to the 5-acyl-5,6-dihydro-l1-morphanthridones may alkali metal bichromate, potassium permanganate, or hydrogen peroxide.

Examples of some of the 5-acyl-5,6 dihydro-1l-morphanthridones which may be prepared in this manner are:

S-acetyl-S, 6-dihydro-1l-morphanthridone,

2-chloro-5-acetyl-5,G-dihydroll-morphanthridone,

2-trifluoromethyl-5-pr0pionyl-5,6-dihydro- 1 l-rnorphanthridone,

B-methyI-S-butyryl-S, 6-dihydro-l l-morphanthridone, and

5-benzoyl-5,-6-dihydro-l l-morphanthridone.

Examples of some of the 5-acyl-5,6-dihydro-1l-morphanthridone oximes which may be prepared by the described process are:

5-acetyl-5,6-dihydro-l l-morphanthridone oxime, 2-chloro-5-acetyl-5,6-dihydro-l'1-rnorphanthridone oxime, Z-trifiuoromethyl-S-propionyl-l l-morphanthn'done oxime,

3-methyl-5-butyryl-5,6-dihydro-11-morphanthridone oxime,

-benzoyl-5,6-dihydro-1l-morphanthridone oxime, and

5-benzenesulfonyl 5,6-dihydro-1l-morphanthridone oxime.

The 5-acyl-5,6-dihydro 1l-morphanthridone oximes of the present invention as well as their pharmaceutically acceptable salts are promising anti-hypertensive agents. The compounds may be administered to animals as the pure compounds or in the form of pharmaceutically acceptable nontoxic salts. However, to obtain a more practical size to dosage relationship, one or more of the compounds is generally combined with a suitable pharmaceutical carrier and made into unit dosage forms. These dosage forms may be particularly adapted for either oral or parenteral administration.

Pharmaceutical carriers which are either liquid or solid may be employed. The preferred liquid carrier is water. However, in the event the compound is not soluble or miscible in water, an organic solvent such as ethylene glycol may be employed. Flavoring materials may be included if desired.

Solid pharmaceutical carriers such as starch, sugar and talc can be utilized to form powders. These powders can be used as such or can be tableted or used to fill gelatin capsules. Suitable lubricants such as magnesium stearate, binders such as gelatin and disintegrating agents such as sodium carbonate in combination with citric acid may be employed in the formation of the tablets.

The following examples are presented to illustrate this invention:

EXAMPLE I 5-acetyl-5,6-dihydr0-1 1 -morphanthridone oxime A mixture of 0.02 mole of 5-acetyl-5,6-dihydro-11- morphanthridone, 0.05 mole of hydroxylamine hydrochloride and 50 ml. of pyridine is stirred and held at reflux for 50 hours. The pyridine is distilled in vacuo, the residue poured into ice and water, the resulting oil extracted with chloroform and washed with water, aqueous hydrochloric acid, and water, and dried over sodium sulfate. The solution is filtered and concentrated to leave an orange solid, MJP. 98-112", which on repeated crystallizations from acetonitrile gives 5-acetyl-5,6-dihydro-1l-morphanthridone oxime, M.P. ZZZ-224 C.

4 Analysis.-Calcd. for C H N O C, 72.13; H, 5.31; N, 10.52. Found: C, 72.09; H, 5.24; N, 10.55.

EXAMPLE II 2-chlore-5-acetyl-5,6-dihydr0-11-morphanthrid0ne oxime The procedure of Example I is repeated except that 2- chloro-S-acetyl-S,-6-dihydro 1l-morphanthridone is employed in place of 5-acetyl-5,6-dihydro-l-l-morphanthridone. The product obtained is 2-chloro-5-acetyl-5,6-dihydro-ll-morphanthridone oxime.

EXAMPLE III 5 -benz0yl-5 ,6-dihydro-1 1-m0rphanthridone oxime The procedure of Example I is repeated except that 5- benzoyl-5,6-dihydro-11-morphanthridone is employed in place of 5-acetyl-5,6-dihydro-l-l-morphanthridone and the product which is obtained is 5-benzoyl-5,6-dihydroll-morphanthridone oxime.

We claim:

1. A compound of the formula References Cited Wagner et al.: Synthetic Organic Chemistry (New York, 1953), page 739.

Winthrop et al.: J. Med. 1199, 1201 and 1206.

Pharm. Chem, vol. 5, pp.

ALTON D. ROLLINS, Primary Examiner. 

1. A COMPOUND OF THE FORMULA 